# pygame初体验

import pygame
pygame.init()

screen = pygame.display.set_mode([800, 600])

keep_going = True

GREEN = (0, 255, 0)
radius = 50

while keep_going:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            keep_going = False
    pygame.draw.circle(screen, GREEN, (100, 100), radius)
    pygame.display.update()

pygame.quit()
